Large Capacity Ergonomic Battery Grip for Canon EOS 6D DSLR,Powered by up to two Battery Pack LP-E6, six AA-size/LR6 batteries, or optinal AC Adapter Kit ACK-E6,Shutter Button, Main Dial, Multi-Controller, AF Point Selection Button, AE lock/FE lock Button, AF Start Button, and Multi-function button. Working temperature range 0 degree Celsius- 40 degree Celsius.